Acer aspire 5520-5912 motherboard dead

hi members,
I am new to this forum, I have an acer aspire 5520-5912 laptop which i bought from an friend from US, 2 years back. Its mother board had gone. It didnt start, i had tried all the stuffs like cleaning RAM slot, HDD slot, fan etc. checked battery etc. But then i gave to service, they found its mother board fault. and i am searching for mother board from all over India (through phone and Net) ,

Nehru Place , Delhi.
Mumbai, Bangalore, Chennai , and even acer service, and all other links i have. but they say it is rare to get AMD based Acer boards. mine is AMD turion 64x2 dual core TL-58 processor based NVidia chipset board with integrated graphics.

Even in google, i cannot find an board, but i can see lots of boards for aspire 5520 laptop, which has Athlon 64x2 processor, and the board design is almost visually same. external casing also same.

Can i use this board with turion processor, or should i replace processor to Athlon in case i use 5520 board instead of original 5520-5912 board?

I am fed up with this acer, please help in this regard.

configuration of my laptop.
http://reviews.cnet.com/laptops/acer-aspire-5520-5912/1707-3121_7-32784268.html

My part no: LA-3581 (got from Net)
My RAM slot no: MBAJ702003742317221601.

But i get LA-3581P part in net in large numbers which is of 5520's , For visual reference i shall post two links of part no: LA-3581 & LA-3581P

The below link has different MBA...series number, but it is 5520 board
http://cgi.ebay.ph/Acer-Aspire-lopt...ViewItemQQptZMotherboards?hash=item3a5558bd82

The below link is of 5520-5912 mother board

http://www.laptopking.com/kingpartdetails.asp?ref=723&category=boards